Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-74062

QCombobox drop-down list jumping on open

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2: Important
    • Resolution: Done
    • Affects Version/s: 5.12.0, 5.12.1
    • Fix Version/s: 5.12.3, 5.14.0 Alpha
    • Component/s: GUI: Look'n'Feel
    • Labels:
      None
    • Environment:
      Tested on:
      Windows 10 64bit Version 1809 (Desktop)
      Qt with MSVC2017 64bit compiler
      CPU: Intel Core i7-8700
      Graphics: Intel UHD Graphics 630 (CPU integrated)
      (no OpenGL drivers installed)
    • Platform/s:
      Windows
    • Commits:
      74aeacace4124b7452a3b1e951e1a3b25f84d47f (qt/qtbase/5.12)

      Description

      QCombobox: After pushing the drop-down button the drop-down list does not open straight down horizontal aligned with the QComboxBox position. At first the opening list is shifted a bit to the left and after that aligns horizontally correct to the QComboBox position.

      This is a regression that took place since Qt 5.12.0!

      Qt 5.11.3 and all prior versions are fine. That means QComboBox drop-down list opens straight horizontal aligned to QComboxBox as it used to be in Windows.

      In some cases I were not able to reduce to a test case the drop-down list even opens with a short black frame flicker. So there might be a deeper issue behind all that. The same here Qt 5.11.3 and prior doesn't show that.

      A short test application is attached.

        Attachments

        1. combotest.zip
          1 kB
        2. image-2019-02-28-10-18-59-029.png
          image-2019-02-28-10-18-59-029.png
          9 kB
        3. qtbug74062.zip
          2 kB

          Issue Links

          No reviews matched the request. Check your Options in the drop-down menu of this sections header.

            Activity

              People

              • Assignee:
                qt.team.quick.subscriptions Qt Quick and Widgets Team
                Reporter:
                mireiner Chris
              • Votes:
                1 Vote for this issue
                Watchers:
                10 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:

                  Gerrit Reviews

                  There are no open Gerrit changes